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发明名称
Automatic telephone message receiver and recorder
摘要
申请公布号
US1973081(A)
申请公布日期
1934.09.11
申请号
US19320634025
申请日期
1932.09.20
申请人
TELEVOICE CORPORATION OF AMERICA
发明人
KEISER MORRIS
分类号
H04M1/65
主分类号
H04M1/65
代理机构
代理人
主权项
地址
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